from flask import Flask, request, render_template, jsonify, redirect, url_for, g
import sqlite3
from flask_oidc import OpenIDConnect
from werkzeug.middleware.proxy_fix import ProxyFix
import os
import json

app = Flask(__name__)
app.config.update({
    'SECRET_KEY': os.environ['SECRET'],
    'DEBUG': False,
    'OIDC_CLIENT_SECRETS': json.loads(os.environ['CLIENT_SECRETS']),
    'OIDC_ID_TOKEN_COOKIE_SECURE': False,
    'OIDC_USER_INFO_ENABLED': True,
    'OIDC_OPENID_REALM': 'hottis',
    'OIDC_SCOPES': ['openid', 'email', 'profile']
})

oidc = OpenIDConnect(app)


# Datenbankverbindung konfigurieren
def get_db_connection():
    conn = sqlite3.connect('nutrition.db')  # 'nutrition.db' ist der Name der Datenbankdatei
    conn.row_factory = sqlite3.Row  # Ermöglicht den Zugriff auf Daten durch Spaltennamen
    return conn


#def init_db():
#    conn = get_db_connection()
#    cursor = conn.cursor()
#
#    # Erstellen der Tabelle
#    cursor.execute('''
#        CREATE TABLE IF NOT EXISTS nutrition_table (
#            id INTEGER PRIMARY KEY,
#            name TEXT NOT NULL,
#            kcal REAL,
#            EW REAL,
#            Fett REAL,
#            KH REAL,
#            BST REAL,
#            CA REAL
#        )
#    ''')
#
#    # Testdaten einfügen
#    test_data = [
#        ('Apfel', 52, 0.3, 0.2, 14, 0.2, 6),
#        ('Banane', 89, 1.1, 0.3, 23, 0.3, 5),
#        ('Karotte', 41, 0.9, 0.2, 10, 0.2, 3),
#        ('Tomate', 18, 0.9, 0.2, 3.9, 0.2, 4),
#        ('Brokkoli', 34, 2.8, 0.4, 6.6, 0.4, 2),
#        ('Spinat', 23, 2.9, 0.4, 3.6, 0.4, 99),
#        ('Kartoffel', 77, 2, 0.1, 17, 0.1, 12),
#        ('Huhn', 239, 27, 14, 0, 0, 2),
#        ('Lachs', 208, 20, 13, 0, 0, 1),
#        ('Ei', 155, 13, 11, 1.1, 1, 1)
#    ]
#
#    cursor.executemany('INSERT INTO nutrition_table (name, kcal, EW, Fett, KH, BST, CA) VALUES (?, ?, ?, ?, ?, ?, ?)', test_data)
#
#    conn.commit()
#    conn.close()



def calculate_nutrition(food, weight):
    conn = get_db_connection()
    cursor = conn.cursor()

    # Abfrage der Nährwertdaten aus der Datenbank
    cursor.execute('SELECT kcal, EW, Fett, KH, BST, CA FROM nutrition_table WHERE name = ?', (food,))

    result = cursor.fetchone()
    conn.close()

    if result:
        # Runden und Berechnen der Nährwerte basierend auf dem Gewicht
        kcal, ew, fett, kh, bst, ca = result
        nutrition_values = [
            round(kcal * weight / 100),    # kcal gerundet auf ganze Zahl
            round(ew * weight / 100, 1),   # EW gerundet auf eine Dezimalstelle
            round(fett * weight / 100, 1), # Fett gerundet auf eine Dezimalstelle
            round(kh * weight / 100, 1),   # KH gerundet auf eine Dezimalstelle
            round(bst * weight / 100, 1),  # BST gerundet auf eine Dezimalstelle
            round(ca * weight / 100)       # CA gerundet auf ganze Zahl
        ]
        return nutrition_values
    else:
        return None


# Index-Route
@app.route('/')
@oidc.require_login
@oidc.require_keycloak_role('user')
def index():
    return render_template('index.html')

# ...

@app.route('/get_products')
@oidc.require_login
@oidc.require_keycloak_role('user')
def get_products():
    conn = get_db_connection()
    cursor = conn.cursor()
    cursor.execute('SELECT name FROM nutrition_table')
    products = cursor.fetchall()
    conn.close()
    print("ter")
    return {'products': [product[0] for product in products]}





# Route zum Hinzufügen und Berechnen von Lebensmitteln
@app.route('/add_lm', methods=['GET'])
@oidc.require_login
@oidc.require_keycloak_role('user')
def add_lm():
    food = request.args.get('food')
    weight = float(request.args.get('weight'))

    nutrition = calculate_nutrition(food, weight)
    if nutrition:
        # Extrahieren der einzelnen Nährwerte
        kcal, ew, fett, kh, bst, ca = nutrition
        return jsonify({
            "food": food,
            "kcal": kcal,
            "ew": ew,
            "fett": fett,
            "kh": kh,
            "bst": bst,
            "ca": ca
        })
    else:
        return "Lebensmittel nicht gefunden.", 404
    


@app.route('/add_nutrition', methods=['POST'])
@oidc.accept_token(require_token=True, scopes_required=['openid'])
def add_nutrition():
    food = request.form.get('food')
    kcal = float(request.form.get('kcal'))
    ew = float(request.form.get('ew'))
    fett = float(request.form.get('fett'))
    kh = float(request.form.get('kh'))
    bst = float(request.form.get('bst'))
    ca = float(request.form.get('ca'))

    print("test")
    # Verbindung zur Datenbank herstellen und Daten einfügen
    conn = get_db_connection()
    cursor = conn.cursor()
    cursor.execute("INSERT INTO nutrition_table (name, kcal, ew, fett, kh, bst, ca) VALUES (?, ?, ?, ?, ?, ?, ?)",
                   (food, kcal, ew, fett, kh, bst, ca))
    conn.commit()
    conn.close()

    return redirect(url_for('nutrition'))


@app.route('/nutrition')
@oidc.require_login
@oidc.require_keycloak_role('user')
def nutrition():
    return render_template('nutrition.html')



app = ProxyFix(app, x_for=1, x_host=1)